A procedure for the production of a foam of rigid structure. (Machine-translation by Google Translate, not legally binding)

摘要

A procedure for the production of a rigid structure foam characterized by reacting together: A. An organic polyol B. An organic polyisocyanate and C. Aqueous sodium silicate having a SiO2/Na2O ratio of 2.4 to 3.25; where at least one of the three components (A, B, C) contains a dissolved insufflating agent; in the presence of a surfactant and a catalyst for the reaction of the radicals -OH and -N = C = O; and where the weight of said aqueous sodium silicate constitutes from 10 to 60% of the weight of the components. (Machine-translation by Google Translate, not legally binding)